#ifndef _SYS_TIMER_H_
#define _SYS_TIMER_H_ 			   

#ifdef SYMBOL_GLOBALS
   #define SYS_TIMER_EXT
#else
   #define SYS_TIMER_EXT extern
#endif //* SYMBOL_GLOBALS
   
SYS_TIMER_EXT void OSSystimerInit(void);
SYS_TIMER_EXT void SysTick_Handler(void);
SYS_TIMER_EXT void delay_us(uint32_t unDelayUS);

SYS_TIMER_EXT void DelayusByCount(uint16_t usDelayUS);	

SYS_TIMER_EXT uint32_t GetElapsedSecs(void);
SYS_TIMER_EXT uint32_t GetElapsedMSecs(void);
SYS_TIMER_EXT uint32_t GetCurSysticks(void);


#endif





























